Can this block be repaired - g10a

[faheemakbar18]

its not just about the engine bro its about getting rid of faulty curb and some other missing vacuum pipes and valves. previous owner was a jerk.

Damn man, its always the previous owner

Sent from my XT1080 using Tapatalk

[faheemakbar18]

Two threads were damaged
They installed thread insert. Aka churri wala bush by creating bigger whole. Bush was custom made

Head taken off

Creating bigger holes and threading them

Mechanic said 2mm headgasket as head was faced.
It was getting late. So rest of work will be done tomorrow InshaAllah.
Might swap radiator as well

Sent from my XT1080 using Tapatalk

[Xulfiqar]

this is easily repairable if you have the correct tooling, I do this on BMW, toyota and some GM blocks. You need a threaded insert made of tool grade steel with both side threaded, the inner side is threaded for your own factory bolts, the outer side is supposed to be coarse threaded. The block is drilled till it bottoms and fully tapped for coarse threads and the threaded insert then inserted with permanent threadlock compound, When you put your head and tighten it down it will torque correctly.

This is a permanent and proven repair if you have the tooling and parts to do it. if your lathe guy is just hammering a smooth aluminium or brass bushing into the block and turning a tap in it to tighten then he needs to find some other line of work. I made a thread here on PW where I repaired a camry 2AZ-FE engine with this issue. (very common failure on early toyota 2AZ-FE - its a design fault from toyota)

That camry mentioned is running perfectly strong and perfect.

https://www.pakwheels.com/forums/d-i-y-projects/245540-toyota-2az-fe-cylinder-head-bolt-thread-repair-2

[Xulfiqar]

the "churi wala bush" - is supposed to be of a certain grade of steel and cut properly for threads - Its also to be locked with permanent threadlocker so it doesnt loosen up while in service.

I hope your mechanic actually drilled out all old threads and centered the new bushing as I dont see any centering pilot anywhere in the pictures. It only takes 1mm off center from having a usable repair to a scrap block in this case.

btw - the top picture shows cyl 1 and 2 washed with steam while cyl 3 looks perfectly OK to me, you had a breach on the front side of the engine - please check the exhaust manifold for the casting remains between the runners. If its there then cut it off - its the reason the head gasket is known to blow on this engine.

[faheemakbar18]

@xulfiqar bhai
Yes. More or less same procedure was applied.
He brought steel rod and made insert from it.
Drilled old holes. Created threads and tightened the new inserts with some compound applied to them. Regarding "centering pilot" I looked it up at google and he used some device of that sort.

The machining was kinda arrogant as he didn't like me standing while he work. So I only took few pictures without him knowing or when his son was working. But he was suggested for this sort of work.
Yes casting remains are on exhaust manifold. I wanted to cut them off but mechanic asked me to wait a while, lets see how threads work. Now its doing fine so I will cut them soon.

Sent from my XT1080 using Tapatalk